1404172261 has 2 divisors, whose sum is σ = 1404172262. Its totient is φ = 1404172260.

The previous prime is 1404172247. The next prime is 1404172309. The reversal of 1404172261 is 1622714041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232431236 + 171741025 = 35106^2 + 13105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404172261 - 2⁵ = 1404172229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404172201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702086130 + 702086131.

It is an arithmetic number, because the mean of its divisors is an integer number (702086131).

Almost surely, 2^1404172261 is an apocalyptic number.

It is an amenable number.

1404172261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404172261 is an equidigital number, since it uses as much as digits as its factorization.

1404172261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1404172261 is about 37472.2865728794. The cubic root of 1404172261 is about 1119.7991404790.

The spelling of 1404172261 in words is "one billion, four hundred four million, one hundred seventy-two thousand, two hundred sixty-one".